There's one little problem with that film.... Spielberg hired a bunch of the Jewish people as consultants on the film. Those who knew the real Schindler. Those he protected. Every single one of them walked out during filming, in disgust. Every single one hated Spielberg's revisionist history of what took place near the end of the war.
Schindler, towards the end of the war but before he realized it was nearing its end, came to a drastic conclusion. He realized he couldn't continue to protect all of the people whom he had been, up until that point. So.... He became a gun-runner. That's right. Had weapons illegally sent in, distributed them to the individuals under his protection, made sure they knew how to use them! And, it wasn't a one-time thing either. Multiple illegal shipments. He gave each of them the means to effectively protect themselves.
Now, it's well-known that Spielberg is a huge gun collector. Charlton Heston outed him before he passed away. Spielberg is also a raging hypocrite. He doesn't think people should own guns, and is a rabid gun-control advocate to an extreme degree. He despised the fact that Reality didn't fit into his preconceived notions regarding Schindler. So, he simply left that vital part of the story out of his film.
Enraging all of the elderly Jewish consultants whom he hired. All of the ones who were there during war, and who survived thanks to the illegal arms and training they were provided with. All thanks to Schindler. They all walked out. Not one returned. Spielberg finished the film without them. But as usual, you don't get the truth from the mass media.